Chapter 14 Troubleshooting
14-
12
14.5 Error Code List
14.5.1 Error Code during CPU Operation
Error
code
Error cause
Action
(restart mode after taking an action)
Operation
status
LED
status
Diagnosis
point
2
Data Bus error
If it occurs repeatedly when power
reinput, request service center.
Fail
Blink by
the order
of total
LED.
Power
input
3
Data RAM error
If it occurs repeatedly when power
reinput, request service center.
Fail
Blink by
the order
of total
LED.
Power
input
4
Clock IC(RTC) error
If it occurs repeatedly when power
reinput, request service center.
Fail ERR:
On
Power
input
6
Program memory
error
If it occurs repeatedly when power
reinput, request service center.
Fail ERR:
On
Power
input
10
USB IC error
If it occurs repeatedly when power
reinput, request service center.
Fail ERR:
On
Power
input
11 Backup
RAM
error
If it occurs repeatedly when power
reinput, request service center.
Fail ERR:
On
Power
input
12
Backup Flash error
If it occurs repeatedly when power
reinput, request service center.
Fail ERR:
On
Power
input
13
Base information
error
If it occurs repeatedly when power
reinput, request service center.
Stop
ERR : ON
Power
input
RUN
mode
switching
22
Poor Backup Flash
program
Reoperate after modifying the backup
flash program.
Fail
ERR: On
Reset
RUN
mode
switching
23
Program to execute is
abnormal
Start after reloading the program,
Change battery if it has a problem.
Check the preservation status after
program reloading and if error occurs,
change the CPU module.
Stop ERR:
On
Reset
RUN
mode
switching
24
I/O parameter error
Start after reloading I/O parameter,
Battery change if battery has a
problem.
Check the preservation status after
I/O parameter reloading and if error
occurs, change the CPU module.
Stop ERR:
On
Reset
RUN
mode
switching
25
Basic parameter error
Start after reloading Basic parameter,
Change battery if it has a problem.
Check the preservation status after
Basic parameter reloading and if
error occurs, change the CPU
module.
Stop ERR:
On
Reset
RUN
mode
switching
26
Exceed execution
range error
Start after reloading program.
If it occurs repeatedly, request
service center
Stop
ERR : ON
Reset
RUN
mode
switching
27 Compile
error
Start after reloading program.
If it occurs repeatedly, request
service center
Stop
ERR : ON
Reset
RUN
mode
switching